The phenomena of saltish water paradox in amphibian geoecosystems of foreland, with a specific type of ecosystems characterized by low biodiversity and high biological productivity is considered.

The procedure of assessment of water areas ecological state using pollution load index (PLI) was applied to elucidate the pollution status of the Sevastopol Bay. The index allows assessing the quality of environment on the ten-point scale from 1 to 10 i.e. from a severely contaminated water basin to nearly unpolluted one. The ecological status of the Sevastopol Bay was clarified, its partition and comparison with both a number of the European Bays and estuaries and the Australian estuary were accomplished using the PLI.

The influence of the drain of the Chernaya River to the forming of the water-salt regime of waters is examined on the basis of data of the regime observations of the aqueous drain and content of chemical indices. The calculation of the extension of biogenic elements into the Sevastopol Bay is executed.

Methane is the important element of the ecosystem of the Black Sea, which influences a global climate change. In the work the basic processes of the biogeochemical behavior of methane are evaluated.

An attempt was made to create information images of amphibian basins using artificial categorization on the base of their morphmetrical characteristics and first of all the area of the basin Sn and its form approximated by element geometrical figures (triangular, band, ellipse, semicircle, sircle).